<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <!-- import CSS -->
  <link rel="stylesheet" href="https://cdn.staticfile.org/element-ui/2.15.9/theme-chalk/index.css">
  <style>
    .el-header{
      background-color:red;
      color: #333;
    }

    .el-aside {
      background-color: blue;
      color: #333;
      height: 800px;
    }

    .el-main{
      background-color: green;
      color: #333;
      height: 800px;
    }

  </style>
</head>
<body>
<div id="app">

  <el-container>
    <el-header>Header</el-header>
    <el-container>
      <el-aside width="200px">aside</el-aside>
      <el-main>
        <el-row gutter="20">
          <el-col span="4"v-for="item in 6">
            <el-card >
              <img :src="'banner'+item+'.jpg'">
            </el-card>
          </el-col>
        </el-row>
      </el-main>
    </el-container>

  </el-container>
</div>
</body>
<!-- import Vue before Element -->
<script src="https://unpkg.com/vue@2/dist/vue.js"></script>
<!-- import JavaScript -->
<script src="https://cdn.staticfile.org/element-ui/2.15.9/index.min.js"></script>
<script>
  let v = new Vue({
    el: '#app',
    data: function() {
      return {

      }
    },
    methods:{

    }
  })
</script>
</html>